You’ll also find that, in addition to exploring practical ideas, your four-year-old probably will ask many “universal” questions about subjects such as the origin of the world, death and dying, and the composition of the sun and the sky. Now, for example, is when you’ll hear the classic question “Why is the sky blue?” Like so many other parents, you may have trouble answering these questions, particularly in simple language your child will understand. As you grapple with these issues, don’t make up answers; rely instead on children’s books that deal with them. Your local library should be able to recommend age-appropriate books to help you